GPT-5.1 specs, prices, where it runs and its benchmark standing

Name: GPT-5.1
Author: OpenAI

closed weights · top 10 on 0 of 12 · released Nov 12, 2025

Provider: OpenAI
Release date: Nov 12, 2025; Boards
Parameters: Not disclosed by OpenAI
Modalities: Text, Image, Files to Text; OpenRouter
License: Proprietary; LMArena
Context window: 400K tokens; Pricing
Pricing: $1.25 in / $10 out per 1M tokens; All prices
Hosting: 5 priced API routes · Azure OpenAI (28 regions) · OpenRouter; Pricing Regions
Weights: Closed weights
Benchmarks: 12 boards captured

Rank	Board	Category	Score	Of
12	MultiChallengeChat · as “gpt-5.1-2025-11-13-thinking”	Chat	63.4%	35
18	HLEReasoning · as “gpt-5.1-thinking”	Reasoning	23.7%	44
30	Search ArenaAgents and tools · as “GPT-5.1 (Search)”	Agents and tools	1,184	40
35	MCP AtlasAgents and tools · as “gpt-5.1 (high)”	Agents and tools	50.1%	37
39	Document ArenaVision · as “GPT-5.1”	Vision	1,416	40
44	Vision ArenaVision · as “GPT-5.1 (High)”	Vision	1,251	85
53	ARC-AGI-2Reasoning · as “GPT-5.1 (Thinking, High)”	Reasoning	17.6%	92
59	Text ArenaChat · as “GPT-5.1 (High)”	Chat	1,456	84
59	Epoch ECIReasoning · as “GPT-5.1”	Reasoning	150.9	100
64	GPQA DiamondReasoning · as “gpt-5.1-2025-11-13_high”	Reasoning	87.6%	100
14	SWE-bench VerifiedCoding · stale since 2026-02-26 · as “GPT 5.1 (2025-11-13) (medium)”	Coding	66.0%	39
24	MMLU-ProReasoning · stale since 2026-03-11 · as “GPT-5.1”	Reasoning	86.4%	100

Versions and release history

11 versions in this line since May 28, 2023, from Pricing, OpenRouter and the boards.

Category ranks, more models and catalog changes